Bat Survey Arun District
A bat survey in Arun District is often required where development proposals could affect buildings, trees or habitats capable of supporting bats.
Because bats are legally protected across England, planning authorities must consider whether development may affect roosts or important habitat before granting permission.
Bat surveys form part of ecological due diligence for many planning applications and help ensure the planning authority has sufficient ecological information to assess compliance with wildlife legislation and planning policy requirements.
ACP Consultants provides bat surveys for planning in Arun District for householder development, property redevelopment, rural conversions and larger residential schemes. Surveys are undertaken in accordance with recognised bat survey guidelines, ensuring methods follow established ecological standards.
Our team also supports planning teams where bat surveys form part of a wider ecological impact assessment, helping developers identify ecological constraints early and reduce the risk of delays during the planning process.
We follow a simple, transparent process to ensure your project runs smoothly from the very first contact to the final report. Our approach is designed to provide you with clarity at every step, so you’re fully informed and confident in moving forward.
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Step 1: Request a Quote
Fill out our quick quote form or call us, and our team will provide a free, no-obligation quote, outlining the services tailored to your needs.
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Step 2: Confirm Your Booking
Once you approve the quote, simply return the booking form. We’ll schedule your survey and ensure all the details are taken care of.
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Step 3: Receive Your Report
After your survey is completed and payment is received, we’ll promptly issue your survey report, ensuring you get the results as quickly as possible.
In the past year, we’ve delivered over 750+ audit-ready reports supporting 400+ projects for developers, planners, and architects nationwide. We put quality over quantity and build lasting relationships based on trust, ensuring your planning applications are backed by robust evidence and delivered on time.
Do I Need a Bat Survey in Arun District?
Planning authorities typically request ecological survey information where development may affect protected species or their habitats.
You may need a bat survey in Arun District if your project involves any of the following:
- Roof repairs, loft conversions or roof replacement works
- Demolition of buildings or structures
- Barn conversions or redevelopment of agricultural buildings
- Works affecting mature trees or woodland edges
- Installation of external lighting near ecological corridors
- Development close to woodland, rivers, wetlands or coastal habitat
- Alterations to older buildings with loft voids or roof cavities
Many buildings constructed before modern roofing membranes were introduced can contain features suitable for bats. Gaps beneath tiles, ridge tiles and soffits may allow bats to access loft spaces.
In these situations, the first stage is normally a preliminary roost assessment in Arun District, which helps determine whether bats are likely to be present and whether additional surveys are required.
Survey Types for Planning Projects
Bat surveys generally follow a staged approach designed to assess roost potential and confirm bat activity. This structured methodology allows ecologists to gather reliable evidence while ensuring surveys align with recognised bat survey guidelines used in the planning system.
The process normally begins with an inspection to assess whether bats could be present. This may involve checking buildings, roof spaces, trees, outbuildings and surrounding habitats for features that could support roosting bats. The findings help identify whether a site has negligible, low, moderate or high bat roost potential.
Where suitable features are found, the survey process may progress to activity monitoring. This can include dusk emergence surveys or dawn re-entry surveys to confirm whether bats are using the site. Acoustic equipment may also be used to support bat activity recording and species identification.
Understanding which survey stage applies to a site helps homeowners, architects and developers plan their projects efficiently and avoid delays during planning applications. A staged approach also ensures survey effort remains proportionate, with further work only recommended where the initial findings indicate it is needed.
Preliminary Roost Assessment
A preliminary roost assessment Arun District is the first step in most bat survey projects and is typically carried out during the daytime.
During this survey an ecologist undertakes a detailed inspection of buildings or trees to identify features capable of supporting bats. The survey may include both external inspection and internal loft inspections where safe access is available.
The survey records:
- structural features suitable for bat roosting
- evidence such as droppings, feeding remains or staining
- habitat suitability around the site
- proximity to ecological corridors such as rivers or woodland
The findings are documented within a Preliminary Roost Assessment report, which may be submitted alongside planning applications to demonstrate that potential impacts on bats have been considered.
Bat Emergence and Re-entry Surveys (BERS)
Where the preliminary inspection identifies potential roost features, bat emergence surveys in Arun District may be required.
These surveys are undertaken during the evening and early morning and involve ecologists observing bat activity around the building to determine whether bats are using the site as a roost.
Methods typically include:
- dusk emergence surveys observing bats leaving roost features
- dawn re-entry surveys observing bats returning to roosts
- acoustic bat monitoring using specialised detectors
- recording calls for bat species identification
These surveys are usually carried out across multiple visits during the bat survey season to ensure reliable ecological data.
Reporting and Planning Submission
Following completion of surveys, the findings are compiled into a professional report suitable for planning submission. The report explains the bat roost survey results, ecological context and whether bats are likely to be affected by development.
This report allows Arun District Council, planning consultants and architects to understand ecological constraints and make informed decisions. It sets out the survey methods used, site conditions, roost potential, evidence recorded, bat activity findings where relevant, and the likely impact of the proposed works.
Where no bats are present, this can help planning applications proceed without further ecological requirements, subject to the findings and local authority review. Where bats are present, the report provides clear recommendations, any further survey or mitigation needs, and proportionate next steps to support planning and reduce the risk of delays.
Recommendations may include timing controls, sensitive working methods, lighting advice, retention of roost features, replacement roost provision or licensing support where roosts could be affected. This ensures the planning submission is supported by clear ecological evidence and that protected species considerations are addressed before works begin.
Mitigation, Licensing and Lawful Development
Where bats are confirmed, ecological recommendations may include design adjustments, timing of works or proportionate mitigation measures. These measures may include retaining roost features, sensitive lighting design or scheduling works outside key activity periods.
Mitigation advice is tailored to the survey findings, roost type, species recorded and scale of the proposed development. Recommendations may include avoiding disturbance during sensitive periods or maintaining access to existing roost features. They may also include installing suitable replacement roost provision or adapting construction methods to reduce impacts.
Surveys can also provide insight into bat behaviour, movement patterns and use of habitat corridors. These may include hedgerows and river routes. In Arun District, this may be relevant where projects are close to the River Arun, woodland edges or mature tree lines. It may also apply near gardens, wetlands or coastal habitats used by bats for foraging and commuting.
This helps inform development design and ensures protected species are appropriately considered within planning decisions. It also keeps proposals aligned with recognised ecological guidance. Where a roost could be affected, further survey work or Natural England licensing support may be required before works proceed.
Bat Survey Season and Timelines
Many bat surveys must be undertaken during the bat survey season, which generally runs from May to September.
During this period bats are active and environmental conditions allow reliable monitoring. Outside this period bats may hibernate or show limited activity, making surveys unreliable.
Because activity surveys are seasonal, projects requiring bat emergence surveys in Arun District may need to schedule monitoring visits during the summer months.
Early ecological advice is therefore important. Starting surveys early can help ensure that:
- planning applications are not delayed
- survey windows are available during the season
- ecological reports remain valid when submitted
Further information is available on our bat survey season guidance page.
Costs and Timescales
The cost of a bat survey in Arun District depends on several factors including site characteristics and survey requirements. Each project is assessed individually because survey scope can vary between a small residential property, a barn conversion, tree works or a larger development site.
Key cost drivers include:
- number of buildings or trees requiring inspection
- building size and accessibility
- surrounding habitat suitability
- requirement for seasonal activity surveys
- need for internal loft access or specialist access equipment
- whether further reporting, mitigation advice or licensing support is required
A preliminary roost assessment typically involves a single daytime visit and is usually the first stage of survey work. If bat activity surveys are required, multiple evening or dawn visits may be necessary during the bat survey season, usually between May and September.
Timescales also depend on weather, site access and planning deadlines. Early instruction is recommended because seasonal survey windows can affect programme dates.
Because each project differs, ACP Consultants can review project drawings, photographs and development proposals before providing a tailored quotation for your bat survey in Arun District.
Local Planning Policy and Biodiversity Considerations
When determining planning applications, local planning authorities must consider biodiversity impacts alongside national wildlife legislation.
Within Arun District, biodiversity considerations are reflected through planning policies and ecological strategies that encourage the protection and enhancement of habitats and protected species. Planning authorities typically expect development proposals to demonstrate that potential impacts on wildlife, including bats, have been appropriately assessed.
Where surveys identify bat roosts or important commuting routes, planning authorities may require mitigation measures or ecological enhancements to ensure development proceeds responsibly.
In some cases, ecological survey findings may inform wider environmental assessments such as ecological impact assessments, which consider how development may affect habitats, species and ecological networks.
Although survey requirements vary depending on project scale and location, providing robust ecological survey information early in the planning process can help support smoother planning decisions.
Local Context – Development and Bat Habitat in Arun District
Arun District lies within the coastal plain of West Sussex, covering a mixture of seaside towns, historic market settlements and rural farmland. The district includes settlements such as Bognor Regis, Littlehampton and Arundel, as well as smaller villages surrounded by agricultural land and green corridors.
This varied landscape creates a mosaic of habitats suitable for bats. Hedgerow networks, woodland patches and river corridors provide commuting routes that bats use to travel between feeding areas and roost sites.
The River Arun corridor is an important ecological feature within the district. Riparian habitats such as rivers, wetlands and floodplain grasslands support insect populations that bats feed on during the night.
Coastal areas and urban green infrastructure also support bat activity. Parks, gardens and tree-lined streets within towns like Rustington, Angmering and Felpham can provide valuable foraging habitat.
Older buildings throughout the district also present potential roost opportunities. Historic properties in towns such as Arundel, where traditional building materials and roof voids are common, may contain crevices or sheltered areas suitable for bats.
Agricultural buildings across rural areas of Arun District may also support bat roosts. Barn conversions and rural redevelopment projects therefore often require ecological assessment before planning decisions are made.
These factors mean that ecological surveys, including bat surveys for planning in Arun District, are frequently required for both rural and urban development proposals.
What you Receive from a Bat Survey
Following completion of surveys, clients receive a comprehensive ecological report suitable for planning submission. Your bat survey Arun District includes a professional, planning-ready document that can support planning applications or help discharge planning conditions where ecological information is required.
The report is structured clearly so it can be reviewed efficiently by planning officers, ecological consultees, architects and project teams working across West Sussex. Presenting ecological information in a clear format helps ensure the findings align with recognised planning and ecological expectations.
Reports typically include:
- Site description and development context – outlining the property location, building type and surrounding habitat within Arun District, including nearby features such as the River Arun, coastal habitats, farmland or woodland edges, and how these may influence bat activity.
- Survey methodology following recognised bat survey guidelines – explaining how inspections or monitoring were undertaken and confirming the survey followed accepted ecological practice.
- Results of inspections and activity surveys – presenting findings from building inspections or monitoring surveys carried out on site
- Confirmation of bat species where present – identifying bats recorded during surveys and how they may use the site.
- Analysis of potential impacts on bats and habitats – explaining how development proposals could affect bats or their roosts.
- Recommendations for mitigation or further surveys – outlining proportionate ecological measures if required.
- Clear next steps for planning and ecological compliance – helping project teams understand the next stages in the planning process.
Where required, the report can also support wider ecological documentation such as ecological impact assessments.
Ready to Book Your Bat Survey in Arun District?
Whether you’re at pre-application stage or preparing to submit, our ecologists provide clear, planning-ready bat surveys to support your project and avoid delays.
Local Coverage Across Arun District
ACP Consultants supports projects across Shoreham-by-Sea, Southwick, Lancing, Sompting, Fishersgate, Kingston-by-Sea, Coombes, Upper Beeding, the Southlands area and Shoreham Harbour. These locations include coastal towns, residential neighbourhoods, older properties, river corridor settings and areas close to connected green infrastructure, where ecological constraints can be an important planning consideration.
Across Arun District, bat activity and roost potential may be associated with roof spaces, mature trees, outbuildings, hedgerows, gardens, coastal habitats and river routes. Our team also works across the wider West Sussex region supporting development projects requiring ecological surveys, with local knowledge helping inform proportionate, planning-led survey recommendations for homeowners, architects, planning consultants and developers.
Common Development Projects Arun District
Typical projects requiring ecological surveys include residential property extensions, loft conversions and roof alterations, redevelopment of coastal buildings, conversion of agricultural barns, demolition of garages or outbuildings, removal of mature trees within development sites, infrastructure projects affecting bridges or river corridors, and installation of external lighting near wildlife habitats.
These types of projects can affect structures or habitats that bats may use for roosting, foraging or commuting. Roof spaces, wall cavities, barns, mature trees, bridges, hedgerows and river routes can all provide suitable bat features. Where these features may be affected, a bat survey may be required to support planning, assess potential impacts and identify whether further survey work, mitigation or timing advice is needed before development proceeds.
Why Choose ACP Consultants Ltd
ACP Consultants provides ecological consultancy services across England and has experience supporting planning applications throughout West Sussex. Our work focuses on providing clear, practical ecological advice that aligns with planning requirements while helping clients understand how protected species considerations may influence development proposals.
Our approach focuses on providing clear, professional ecological advice aligned with planning requirements. We aim to ensure that survey findings, ecological constraints and recommended next steps are communicated clearly so that project teams can make informed decisions early in the planning process.
Clients choose ACP Consultants because we provide:
- qualified and experienced bat ecologists with professional field survey experience
- surveys conducted in accordance with recognised ecological guidance and current bat survey guidelines
- clear and professional ecological reporting suitable for planning submissions
- experience supporting planning applications and development projects across a range of site types
Our team regularly supports homeowners, architects, planning consultants and developers seeking reliable ecological advice. By providing structured survey reports and clear ecological recommendations, we help ensure that protected species considerations are addressed appropriately within planning proposals.
We work collaboratively with project teams to provide ecological input that supports responsible development while ensuring compliance with wildlife legislation and recognised survey standards.
References and Useful Resources
- Chartered Institute of Ecology and Environmental Management (CIEEM) – Bat Survey Guidelines for UK Homeowners
- CIEEM – What to Expect from a Bat Survey: Homeowner guide to survey stages, reporting and outcomes
- CIEEM – Bat Mitigation Guidelines (2025): Best practice guidance for mitigation design and implementation
- GOV.UK – Bats: Advice for Making Planning Decisions
- GOV.UK – Bats: Protection, Surveys and Licences
- GOV.UK – Protected Species: How to Review Planning Applications: Guidance for assessing ecological impacts within planning decisions
- Natural England – Bat Advice Service (BAS) Updates and Guidance
- Bat Conservation Trust – British Bat Survey (Passive Acoustic Surveys)
- Bat Conservation Trust – Contacting an Ecological Consultant: Advice on engaging a qualified bat ecologist for surveys and planning
- Bat Conservation Trust – Planning and the Law: Overview of legal protections and planning considerations for bats
- Bat Conservation Trust – Building or Development Works: Guidance on managing bats during construction and development
- Bat Conservation Trust – Planning and Infrastructure Act: Policy context affecting biodiversity and development
- Bat Conservation Trust – Planning and Infrastructure Policy Update (2026): Latest developments in planning and biodiversity policy
- Bat Conservation Trust – National Bat Monitoring Programme Surveys
Local References and Useful Resources
- Arun District Council – Biodiversity Action Plan and Supporting Studies: District-level biodiversity resource setting out objectives, actions and supporting evidence for protecting habitats and species, useful for bat survey planning policy and ecology planning policy in Arun District.
- Arun District Council – Pre-commencement Conditions: Current council planning conditions page referencing protected species duties and Arun Local Plan policies ENV SP1 and ENV DM5, useful for local plan policy for protected species or ecology in Arun District.
- Sussex Bat Group – Main Site: Local bat group for Sussex providing regional bat conservation information and context relevant to bat survey, bat ecologists and bat emergence survey work in the wider Arun area.
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Frequently Asked Questions
Bat surveys in Arun District are often required to support planning applications where development may affect buildings, trees or habitats capable of supporting bats. As all UK bats and their roosts are legally protected, surveys help ensure proposals comply with wildlife legislation and planning policy. Following recognised bat survey guidelines, assessments such as preliminary roost assessments and bat emergence surveys provide the ecological evidence needed for planning validation, helping avoid delays and supporting informed decision-making.
Do I need a bat survey for planning permission in Arun District?
If development proposals could affect buildings, trees or habitats capable of supporting bats, a bat survey Arun District may be required before a planning application is determined. Bat surveys for planning Arun District help ensure protected species are properly considered during the planning process.
Are bats protected in Arun District?
Yes. All bat species in the UK and their roosts are legally protected under wildlife legislation. This protection applies whether bats are present at the time of development works or not.
What triggers bat surveys for planning in Arun District?
Common triggers include roof alterations, demolition, barn conversions, mature tree removal, installation of external lighting and development near woodland, rivers or ecological corridors.
What is a preliminary roost assessment in Arun District?
A preliminary roost assessment Arun District is a daytime ecological inspection of buildings or trees to identify features capable of supporting bat roosts. The survey helps determine whether additional surveys, such as bat activity monitoring, may be required.
When is a bat emergence survey required in Arun District?
A bat emergence survey Arun District may be required if a preliminary roost assessment identifies potential roost features. These surveys confirm whether bats are present and provide ecological evidence required for planning decisions.
What is acoustic bat monitoring and bat species identification?
Acoustic bat monitoring uses specialist detectors to record bat echolocation calls. Ecologists analyse these recordings to support bat species identification and understand how bats use the site.
What bat species occur in West Sussex?
Several species are commonly recorded across West Sussex including common pipistrelle, soprano pipistrelle, brown long-eared bat, noctule and serotine. Some species may also be considered endangered bat species or of conservation concern due to habitat pressures.
When is bat survey season in Arun District?
Bat activity surveys are typically undertaken between May and September when bats are active and monitoring conditions are suitable. Surveys outside this period may be limited because bats are less active.
Can planning permission be refused without a bat survey?
Planning applications may be delayed or refused where required ecological survey information has not been provided. Providing a bat survey Arun District early in the planning process can help avoid delays.
How long does a bat survey take?
A preliminary roost assessment normally requires one site visit. If bat activity surveys are required, several evening or dawn visits may be undertaken during the bat survey season.
Can bat surveys support ecological impact assessments?
Yes. Bat surveys often form part of a wider ecological impact assessment, particularly for larger developments where potential impacts on habitats and protected species must be assessed.
What happens if bats are found during a bat survey?
If bats are present, ecologists will provide recommendations to ensure development proceeds responsibly. This may include mitigation measures, timing considerations or further surveys in line with recognised bat survey guidelines.
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- Last Updated:
- October 2026
Disclaimer: Our content is prepared by ACP Consultants’ in-house specialists and is based on current guidance, standards, and best practice in environmental consultancy. While we make every effort to keep information accurate and up to date, it is provided for general guidance only and should not be relied upon as a substitute for professional advice on specific projects. Planning authorities retain final decision-making powers, and requirements may vary between local authorities and over time. ACP Consultants accepts no liability for any loss arising from reliance on this content without obtaining tailored advice for your project.